To get Street Fighter X Tekken working with your Logitech Rumblepad2 or Dual Action Gamepad, you will need to install the xbox360 gamepad emulation as follows...
Download :
http://rapidshare.com/files/343322681/xbox360cemu.v.3.0.rar
or
http://xinput.googlecode.com/files/xbox360cemu.v.3.0.rar
Extract the files :
dinput8.dll
xbox360cemu.ini
xinput1_3.dll
xinput9_1_0.dll
Place these filed into :
\Program Files (x86)\Capcom\Street Fighter X Tekken\
If you cannot find the folder, do try to locate the file "SFTK.exe" and place the files in the same folder, that should do the trick.
Yes, another game to get excited about, if you are a fan of Street Fighter and Tekken... As a first generation console gamer, I always look forward to Capcom games, so you game fighting arcade fans should have a look at this. I'll sure enjoy it with my Rumblepad2...